Is this a SATA 2 or SATA 3 cable?

Is this a SATA 2 or SATA 3 cable? sata 3 slot Support SATA III 6Gbps Transfer Speed; Support SATA III SSD, HDD, Optical Drive*; Support PCIe , requires x4 Slot; Standard and Low Profile Bracket sata m2 slot I ordered an sata III ssd for this Acer desktop, planning to install in into the m2 slot but now I am not sure that slot is compatible

sata m2 slot No The SATA express slot uses the bottom two SATA 3 connectors along with the one on the far left for SATA Express, think of it as a bridge

sata slot Find Sata Iii Slots On Motherboard Closeup stock images in HD and millions of other royalty-free stock photos, 3D objects, illustrations and vectors in the SATA SSDs and spinning hard drives At PCMag, we have been reviewing SSDs since the late 1990s, and SSDs since their inception more than a decade ago